Added ClosureMirror to dart:mirrors. Added Dart_ClosureFunction to the

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
@@ skipping 2374 matching lines @@
 DART_EXPORT bool Dart_IsClosure(Dart_Handle object) {
   // We can't use a fast class index check here because there are many
   // different signature classes for closures.
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   const Object& obj = Object::Handle(isolate, Api::UnwrapHandle(object));
   return obj.IsClosure();
 }
 
 
+DART_EXPORT Dart_Handle Dart_ClosureFunction(Dart_Handle closure) {
+  Isolate* isolate = Isolate::Current();
+  DARTSCOPE(isolate);
+  const Object& obj = Object::Handle(isolate, Api::UnwrapHandle(closure));
+  if (obj.IsNull()) {
+    return Api::NewError("Null object passed to Dart_ClosureFunction");
+  }
+  if (!obj.IsClosure()) {
+    return Api::NewError("Invalid closure passed to Dart_ClosureFunction");
+  }
+  ASSERT(ClassFinalizer::AllClassesFinalized());
+
+  const Closure& closure_obj = Closure::Cast(obj);
+  RawFunction* rf = closure_obj.function();
+  return Api::NewHandle(isolate, rf);
+}
+
+
 DART_EXPORT Dart_Handle Dart_InvokeClosure(Dart_Handle closure,
                                            int number_of_arguments,
                                            Dart_Handle* arguments) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   const Object& obj = Object::Handle(isolate, Api::UnwrapHandle(closure));
   if (obj.IsNull()) {
     return Api::NewError("Null object passed in to invoke closure");
   }
   if (!obj.IsClosure()) {
@@ skipping 1745 matching lines @@
     *buffer_size = 0;
   }
 }
 
 
 DART_EXPORT void Dart_InitFlowGraphPrinting(FileWriterFunction function) {
   Dart::set_flow_graph_writer(function);
 }
 
 }  // namespace dart